PFAS Filter Buying Checklist

Use this page if a CCR, well panel, or news alert put PFAS (PFOA/PFOS or related compounds) on your shopping list. Skip it if your only complaint is chlorine taste — a basic NSF/ANSI 42 pitcher is enough and cheaper to run.

WaterVetted does not run lab tests. We normalize manufacturer claims and point you at public certification databases so you can verify the exact model.

"Removes up to 99%" in an image is not a certification. What counts is a listing that names PFAS (or specific compounds such as PFOA and PFOS) as a reduced contaminant for the exact model you are buying.

PFAS claims generally appear under NSF/ANSI 53, 58, or 401 / P473-style listings for the compounds the manufacturer tested. A system certified only for lead tells you nothing about PFAS.

1. Model number: copy it from the page, not the photo. Near-identical variants carry different listings.

2. Certification body listing: search the model in NSF, WQA, or IAPMO's public database and open the record.

3. Named compounds: confirm PFOA and PFOS (and any others the listing covers) appear in the claim text.

4. Rated capacity: PFAS reduction is claimed for a defined volume. Find the gallon figure and compare it to your household's annual drinking and cooking volume.

5. Replacement cartridge: check that the cartridge you will reorder carries the same claim; this is where claims quietly disappear.

6. Total cost: cartridge price divided by rated gallons, plus any pre-filters the system requires.

Renters and small kitchens: a composite pitcher with a named PFAS claim (when the listing checks out) or a countertop RO that needs no drilling.

Homeowners who can drill: under-sink RO with NSF/ANSI 58 wording is usually the most predictable point-of-use path.

Skip whole-house PFAS treatment until a lab panel names the compounds and levels — it is a much larger investment.

A point-of-use filter treats drinking and cooking water only. It does nothing about shower water, and it does not fix the source.

Boiling does not remove PFAS; it concentrates them slightly as water evaporates.

Read EPA's PFAS drinking-water page for federal MCL context, then verify the model listing before you buy.